Final answer:
Nutrients circulating in the blood include glucose, amino acids, and fats, which are vital for energy, tissue repair, and cell function. Red and white blood cells are crucial blood components, but are not considered nutrients.
Step-by-step explanation:
The nutrients that circulate in blood include a variety of substances essential for the body's function.
Glucose (a simple sugar) is a primary energy source for the body's cells.
Amino acids are the building blocks of proteins and are critical for the repair and growth of tissue.
Fats are another source of energy and are important for the structure and function of cells.
Although red and white blood cells are critical components of blood, they are not classified as nutrients. Red blood cells transport oxygen, and white blood cells are involved in the immune response.